Resources Contact Us Home
Control apparatus of internal combustion engine

Image Number 15 for United States Patent #7284367.

The ignition timing is sustained at an initial value during a predetermined time beginning at a start of an engine, and is retarded after the predetermined time is elapsed to heat a catalyst at an early time. The predetermined time ends when the negative pressure of an intake pipe or the negative pressure of a brake booster reaches to a predetermined value. That is, the predetermined time is a period, which begins at a start of the engine and ends when a proper negative pressure can be sustained in the brake booster. As a result, it is possible to assure a negative pressure in the brake booster at an early time and to reduce exhaust emission at a start of the engine simultaneously.

  Recently Added Patents
Enhancing user experiences using aggregated device usage data
Image playback device and method and electronic camera with image playback function
3D structured memory devices and methods for manufacturing thereof
Polyfunctional sulfur-containing epoxies and compositions thereof
Device and method for quantizing and inverse quantizing LPC filters in a super-frame
Process for preparing substituted aromatic carboxylic acids
Methods and systems for assessing sales activity of a merchant
  Randomly Featured Patents
Method and apparatus for processing a picture signal having means for varying a quantization characteristic to produce equal-sized sync blocks
Solid state image pickup device and method of fabricating the same
Land vehicle suspension system having a failure detector for detecting failure of a sensor of the system
Collector composition for use in a froth flotation process for the recovery of minerals
T-RAM structure having dual vertical devices and method for fabricating the same
Interleaved finite impulse response (FIR) filter functions for servo and data detection in a direct access storage device (DASD)
Fluid dispenser
Animal actuated drinking fountain and method
Process for the preparation of pyrrole derivates